package com.homework.module6part3.interceptor;

import com.homework.dao.domain.User;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response, Object handler) throws Exception {

        User user = (User) request.getSession().getAttribute("session_user");
        if (user == null) {
            response.sendRedirect("/login");//拦截后跳转的方法
            return false;
        }

        return true;
    }
}
